neurophysiology _3

neurophysiology _3 - Chapter 11: Neurophysiology...

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Chapter 11: Neurophysiology Objectives: ANATOMY/NAMING Describe the two major divisions of the nervous system and their characteristics. Identify the structures/functions of a typical neuron . Describe the location and function of neuroglia . ELECTROPHYSIOLOGY Explain how resting potential is created and maintained. Describe the events in the generation and propagation of an action potential . NEURAL COMMUNICATION Define the structure/function of a synapse synapse . List the major types of neurotransmitters neurotransmitters and neuromodulators. Explain the processing of information in neural tissue.
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Communication Between Excitable Cells The site of communication between a neuron and some other excitable cell = SYNAPSE SYNAPSE 2 Main types of synapses: Electrical direct physical contact allows membrane potentials (action potentials, etc.) to be passed from one cell to another CHEMICAL indirect (no physical contact) communication between cells via the use of specialized NEUROTRANSMITTER molecules and their associated RECEPTORS
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Chemical Synapse Vesicle Neurotransmitter Calcium Channel Receptor Synaptic Cleft Pre-synaptic Cell (“sender”) (“sender”) Post-synaptic Cell (“receiver”) (“receiver”) Axon Terminal Axon Terminal (or Synaptic Terminal or Synaptic knob) NT-degrading enzyme (optional) NT pump (optional)
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Chemical Synapse (optional step) (optional step) ** Calcium enters thru voltage-gated channels ACh = acetylcholine
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Chemical Synapse Click image to be taken to animation
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neurophysiology _3 - Chapter 11: Neurophysiology...

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